Impact of thermodynamic properties and heat loss on ignition of transportation fuels in rapid compression machines

Handle URI:
http://hdl.handle.net/10754/626956
Title:
Impact of thermodynamic properties and heat loss on ignition of transportation fuels in rapid compression machines
Authors:
Ahmed, Ahfaz ( 0000-0001-5982-3464 ) ; Hantouche, Mireille; Khurshid, Muneeb; Mohamed, Samah; Nasir, Ehson Fawad ( 0000-0003-1822-737X ) ; Farooq, Aamir ( 0000-0001-5296-2197 ) ; Roberts, William L. ( 0000-0003-1999-2831 ) ; Knio, Omar; Sarathy, Mani ( 0000-0002-3975-6206 )
Abstract:
Rapid compression machines (RCM) are extensively used to study autoignition of a wide variety of fuels at engine relevant conditions. Fuels ranging from pure species to full boiling range gasoline and diesel can be studied in an RCM to develop a better understanding of autoignition kinetics in low to intermediate temperature ranges. In an RCM, autoignition is achieved by compressing a fuel/oxidizer mixture to higher pressure and temperature, thereby initiating chemical reactions promoting ignition. During these experiments, the pressure is continuously monitored and is used to deduce significant events such as the end of compression and the onset of ignition. The pressure profile is also used to assess the temperature evolution of the gas mixture with time using the adiabatic core hypothesis and the heat capacity ratio of the gas mixture. In such RCM studies, real transportation fuels containing many components are often represented by simpler surrogate fuels. While simpler surrogates such as primary reference fuels (PRFs) and ternary primary reference fuel (TPRFs) can match research and motor octane number of transportation fuels, they may not accurately replicate thermodynamic properties (including heat capacity ratio). This non-conformity could exhibit significant discrepancies in the end of compression temperature, thereby affecting ignition delay (τign) measurements. Another aspect of RCMs that can affect τign measurement is post compression heat loss, which depends on various RCM parameters including geometry, extent of insulation, pre-heating temperature etc. To, better understand the effects of these non-chemical kinetic parameters on τign, thermodynamic properties of a number of FACE G gasoline surrogates were calculated and simulated in a multi-zone RCM model. The problem was further investigated using a variance based analysis and individual sensitivities were calculated. This study highlights the effects on τign due to thermodynamic properties of various surrogate fuels and differences in post compression heat loss over low, intermediate and high temperature region.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Chemical and Biological Engineering Program; Clean Combustion Research Center; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Applied Mathematics and Computational Science Program; Computer, Electrical, and Mathematical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
Citation:
Ahmed A, Hantouche M, Khurshid M, Mohamed SY, Nasir EF, et al. (2018) Impact of thermodynamic properties and heat loss on ignition of transportation fuels in rapid compression machines. Fuel 218: 203–212. Available: http://dx.doi.org/10.1016/j.fuel.2018.01.030.
Publisher:
Elsevier BV
Journal:
Fuel
Issue Date:
30-Jan-2018
DOI:
10.1016/j.fuel.2018.01.030
Type:
Article
ISSN:
0016-2361
Sponsors:
Research reported in this paper was funded by Saudi Aramco under the FUELCOM program and by King Abdullah University of Science and Technology (KAUST) with competitive research funding given to the Clean Combustion Research Center (CCRC). The authors also acknowledge the informative discussions with Dr. Tamour Javed of Fuel Technology Team at Research and Development Center Aramco, Dhahran, Kingdom of Saudi Arabia.
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0016236118300395
Appears in Collections:
Articles; Applied Mathematics and Computational Science Program; Physical Sciences and Engineering (PSE) Division; Chemical and Biological Engineering Program; Mechanical Engineering Program; Clean Combustion Research Center; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorAhmed, Ahfazen
dc.contributor.authorHantouche, Mireilleen
dc.contributor.authorKhurshid, Muneeben
dc.contributor.authorMohamed, Samahen
dc.contributor.authorNasir, Ehson Fawaden
dc.contributor.authorFarooq, Aamiren
dc.contributor.authorRoberts, William L.en
dc.contributor.authorKnio, Omaren
dc.contributor.authorSarathy, Manien
dc.date.accessioned2018-01-31T06:54:00Z-
dc.date.available2018-01-31T06:54:00Z-
dc.date.issued2018-01-30en
dc.identifier.citationAhmed A, Hantouche M, Khurshid M, Mohamed SY, Nasir EF, et al. (2018) Impact of thermodynamic properties and heat loss on ignition of transportation fuels in rapid compression machines. Fuel 218: 203–212. Available: http://dx.doi.org/10.1016/j.fuel.2018.01.030.en
dc.identifier.issn0016-2361en
dc.identifier.doi10.1016/j.fuel.2018.01.030en
dc.identifier.urihttp://hdl.handle.net/10754/626956-
dc.description.abstractRapid compression machines (RCM) are extensively used to study autoignition of a wide variety of fuels at engine relevant conditions. Fuels ranging from pure species to full boiling range gasoline and diesel can be studied in an RCM to develop a better understanding of autoignition kinetics in low to intermediate temperature ranges. In an RCM, autoignition is achieved by compressing a fuel/oxidizer mixture to higher pressure and temperature, thereby initiating chemical reactions promoting ignition. During these experiments, the pressure is continuously monitored and is used to deduce significant events such as the end of compression and the onset of ignition. The pressure profile is also used to assess the temperature evolution of the gas mixture with time using the adiabatic core hypothesis and the heat capacity ratio of the gas mixture. In such RCM studies, real transportation fuels containing many components are often represented by simpler surrogate fuels. While simpler surrogates such as primary reference fuels (PRFs) and ternary primary reference fuel (TPRFs) can match research and motor octane number of transportation fuels, they may not accurately replicate thermodynamic properties (including heat capacity ratio). This non-conformity could exhibit significant discrepancies in the end of compression temperature, thereby affecting ignition delay (τign) measurements. Another aspect of RCMs that can affect τign measurement is post compression heat loss, which depends on various RCM parameters including geometry, extent of insulation, pre-heating temperature etc. To, better understand the effects of these non-chemical kinetic parameters on τign, thermodynamic properties of a number of FACE G gasoline surrogates were calculated and simulated in a multi-zone RCM model. The problem was further investigated using a variance based analysis and individual sensitivities were calculated. This study highlights the effects on τign due to thermodynamic properties of various surrogate fuels and differences in post compression heat loss over low, intermediate and high temperature region.en
dc.description.sponsorshipResearch reported in this paper was funded by Saudi Aramco under the FUELCOM program and by King Abdullah University of Science and Technology (KAUST) with competitive research funding given to the Clean Combustion Research Center (CCRC). The authors also acknowledge the informative discussions with Dr. Tamour Javed of Fuel Technology Team at Research and Development Center Aramco, Dhahran, Kingdom of Saudi Arabia.en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0016236118300395en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Fuel. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Fuel, 30 January 2018. DOI: 10.1016/j.fuel.2018.01.030. © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectIgnition delayen
dc.subjectSurrogate formulationen
dc.subjectRapid compression machineen
dc.titleImpact of thermodynamic properties and heat loss on ignition of transportation fuels in rapid compression machinesen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMechanical Engineering Programen
dc.contributor.departmentChemical and Biological Engineering Programen
dc.contributor.departmentClean Combustion Research Centeren
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentApplied Mathematics and Computational Science Programen
dc.contributor.departmentComputer, Electrical, and Mathematical Science and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabiaen
dc.identifier.journalFuelen
dc.eprint.versionPost-printen
kaust.authorAhmed, Ahfazen
kaust.authorHantouche, Mireilleen
kaust.authorKhurshid, Muneeben
kaust.authorMohamed, Samahen
kaust.authorNasir, Ehson Fawaden
kaust.authorFarooq, Aamiren
kaust.authorRoberts, William L.en
kaust.authorKnio, Omaren
kaust.authorSarathy, Manien
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